I have a problem with my knee and it is getting worse. It feels uncomfortable all the time and hurts if I put a lot of pressure on it. If I straighten my leg it also hurts a lot and when I bend my knee it makes a loud clicking sound. I have got a support 'thing' to put on it and it feels a lot more comfortable when I have that on. Any ideas about what may be wrong and any advice on what I should do?.
You need to see a doctor. The symptoms you've described could honestly be one of about 100 things. For now, rest and ice the knee.